This math topic focuses on simplifying algebraic expressions involving the difference of squares. Students are presented with problems where they simplify expressions framed as a fraction, with a difference of squares in the numerator and a linear binomial in the denominator. Specific skills practiced include recognizing and applying the difference of squares formula, \((a^2 - b^2 = (a+b)(a-b))\), to simplify algebraic fractions by canceling common factors between the numerator and the denominator. These problems are part of an advanced unit on polynomials and quadratics.